Valve-rotating mechanism



M. Q. ANTHONY VALVE ROTATING MECHANISM Filed June 25, 1920 Dec. 23, 1924.

Patented Dec. 23, i924.

@TATE earner @FFEQE.

MARCUS O. ANTHONY, 033 NEW YORK, N. Y., ASSIGNOR TO CONTINENTAL ENGINEER- ING CORPORATION. OF OMAHA, NEBRASKA, A CORIPOR-ATION.

VALVE-RQTATING- MECHANISM.

Application filed June 23,

To all whom it may concern:

Be it known that I, MARoUs O. ANTHONY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Valve-Rotating Mechanism, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in a valve rotator especially adapted for use in connection with poppet valves for gas engines.

The main object of the present invention resides in the novel manner of producing a rotative action to the valve stem during one of its reciprocatory movements, preferably the down or seating stroke, to cause a wiping action of the valve head against the seat during its closing action.

Another object of the invention is the provision of a rotating mechanism which may be applied to the standard form of valve now commonly used without necessitating change of construction in any of the valve parts.

Another object of the invention is to utilize the expansible force of the spring which bodily carries an actuating mechanism to cause a rotation of the valve throughout its seating stroke and slightly continuing this movement after the valve has been completely seated.

A still further object of the invention is the provision of a valve rotator which is simple in construction, consisting of a mini mum number of parts, yet highly eflicient and durable in its action.

With these and other objects in view, it will be apparent to those skilled in the art that certain variations as to the specific construction herein shown, may be resorted. to without departing from the spirit of the invention, and the scope of protection contemplated will appear from the appended claims.

In the attached drawings, forming part of this specification, I have illustrated the preferred embodiment of the invention, in which Figure 1 is a fragmentary section taken through an internal combustion engine and showing the valve rotating mechanism in applied positionv F g r 2 is an enl rged. view partly in 1920, Serial N0. 391,205.

section showing the rotating mechanism applied to the valve stem.

Figure 3 is a sectional view taken on line 33 of Fig. 2.

Figure 4 is a sectional view taken on line l--4c of Fig. 2.

Figure is a side elevation of the loosely mounted sleeve.

Figure 6 is a side elevationof the member which is adapted to be affixed to the valve stem.

Figure 7 is a modified form of the spring.

In the drawings similar reference characters indicate like part-s throughout the several views. 1 designates the usual cylinder construction of an internal combustion engine, 2 the inlet valve casing thereof, and 3 the valve which controls the inlet of fuel to the combustion cylinder. This valve 3 is provided with a valve head 4 adapted to rest upon a valve seat designated 5. The valve stem is provided with the usual cross key 6 adjacent the lower end thereof, which in the ordinary construction of a poppet valve forms a resting surface for the lower end of an expansion spring. While in the foregoing I have described the construction of an inlet valve, it is to be understood that this invention could as well be adapted for use in connection with an exhaust valve, and in fact any type of valve in which there is a rotativeacti-on for the purpose of keeping its contacting surfaces in a clean and highly polished condition.

Affixed to the valve stem 3 is a member designated 8 which interlocks with the cross key 6 by a grooved recess 7 partly extending through the body thereof. This member 8 has an outwardly extending flanged part designated 9, the surface of which is grooved as at 10 to provide one face of a ball raceway. The member 8 is also pro vided with an upstanding central enlargement 11, the outer wall of which is reduced as shown at 12 for a purpose to be later described. The upper portion of the member 8 is recessed as at 13 to provide a seat for the lower end of a loosely mounted sleeve illustrated at 14. The lower end of this sleeve is toothed as indicated at 15, which teeth will cooperate with balls 16 arranged within the recessed portion of the member 11, to constitute a ball clutch for the valve mechanism. The sleeve 14 has at its upper end two outstaadi lg l gs as at 17, the pardesignated at 19.

pose of which will be later described. Above the teeth 15 the sleeve 14 is provided with a circular disk as shown at 18.

In order that the sleeve ll will be held in its proper position within the upper portion of the member 8, I provide a cap generally This cap has a flanged portion 19 corresponding in area to that of the flange 9 on the member 8 and is grooved as at 20, forming the opposite wall of the ball raceway into which suitable bearings are arranged. In order that the cap may be inserted over the collar 14, the upper surface of said cap is cut away as shown at 21, to allow for the passage of the outstanding lugs 17. This cap is held in'a locked position on the member 8 through the employment of a split wire ring 22 seated within an ,in-teriorly grooved portion 23 of the cap 19. This wire ring coacts with the reduced portion 12 of the member 8 and effectually holds the clutch parts in assembled relation.

Surrounding the valve stem 3 and resting upon the flanged portion 19 of the cap 19 is an expansible spring 24. The upper end of this spring is adapted to bear against the under surface of the valve casing as shown in the drawings. In the preferred embodiment of'my invention certain of the coils of this spring are brought close together so as to provide a socalled dead turn within said spring structure as indicated at 25. The close association of the coils at this point form a place of anchorage for a bushing 26, the depending walls of the latter being spirally slotted as show-n at 27. When the parts are in assembled relation the spiral slots 27 are adapted to coact with the out standing lugs 17 on the sleeve 14: during the reciprocatory movements of the valve and in order to hold the bushing at its proper place of anchorage within the spring structure suitable fastening means, as indicated at 28, may be employed.

. In. the modified form of the spring 24. shown in detail in Fig. 7, the same comprises two separate coiled sections 24 and 2.4", The terminal convolution of each of these sections are flattened so that they lie in a plane at right angles to, the longitudina l axis; of the section. When these sections are assembled the abutting ends present a .so-called deadtu-rn within the spring struc ture. In order to hold these sections in .t-ruelongitudinal alinement, the upper end of the bushing 26 is made of a sufficient lengthto overlap each end of the sections {24".{H1d 24 The upper end of this bushing further strengthen the connection between the sections.

Therangeofthe pitch Of the slots 27 may vary according to'the type of valve to which the rotator is attached, as in some cases itv the valve in these instances, especially-on the down stroke, and it has been found that during low speeds of the ,motor the rotating mechanism does not properly funce tion. By providing a mechanism which produces rotary impulses to the valve through the seating action thereof, the a'ds vantage gained is twofold; first, utilizing the expansive force of the expansible spring to cause the rotation of the valve, second, the employment of a cammed face, in the nature'of spiral slots, of a less pitch than. i

that necessary in the case of rot-ators actuated on the opposite stroke. In order to attach the rotator shown in the accompanying drawings to a valve stem all that is necessary todo is to compress the. usual expansion spring found therein by a suit able tool adapted for such a purpose, remove the cross key and then slip the ex,- pansible spring from the valve stem. In place of the usual spring insert the form of spring shown herein, slightly compress ing the same to permit the assembled clutch mechanism to be inserted on the, lower end of the valve stem. place the cross key hack into position, registering the notch in the lower face of the clutch member withsaid key and then release the spring.- Theparts will then be in proper assembled relation on the valve stem and will result in a rotat-ion of the valve during the .down .or seating stroke of the same.

VV'hatI claim is V 1. The combination with a poppet valve, its seat and spring, and coa'ctive means car ried by the valve and an intermediate portion of the spring for imparting a rotary movement to the valve during its seating stroke. 1

2. The combination with a poppet valve, its seatand spring, a clutch associated with the valve, and means carried by the spring for actuating the clutch .to impart a rotary movement to the valve duringone of its strokes.

3. The combination with a poppet valve, its seat and spring, a clutch associated with the valve, and means carried by the. spring for a a ng t e lut h tc impart a rotary the valve, and an actuator therefor carried by the spring to impart a rotary movement to the valve during one of its strokes.

5. The combination With a poppet valve, its seat and spring, a oneWay acting clutch associated With the valve, and an actuator therefor carried by the spring to impart a rotary movement to the valve during one of its strokes.

6. The combination With a poppet valve, its seat and spring, a clutch associated with the valve, and an actuator therefor carried b v the spring to impart a rotary movement to the valve during its seating stroke.

'7. The combination With a poppet valve, its seat and spring, a clutch actuated mem ber aflixed to the valve, and means carried by the spring for operating the clutch during the reciprocatory movement of the valve.

8. The combination with a poppet valve, its seat and spring, said spring having a dead turn intermediate the length thereof, a clutch mechanism associated With the valve stem, and an actuator therefor secured Within the dead turn of the spring for rotating the valve during one of its strokes.

9. The combination With a valve stem having a valve head at the end thereof, a member affixed to the valve stem, a spring surrounding the valve stem and resting at one end against the affixed member, a clutch coacting With the afliXed member, and means associated with the spring intermediate its ends for causing a rotative movement to the clutch and thereby the valve stem during the actuations of the latter.

10. A poppet valve for a gas engine comprising a valve stem having a head at one end thereof, a member aifiXed to the stem, a sleeve loosely mounted on the stem, said member and sleeve having a oneway clutch engagement therebetvveen, a cap for holding the sleeve and member in cooperative relation, a spring surrounding the valve stem and resting at one end against the cap, and means carried by the spring for imparting a movement to the loosely mounted member on the valve stem thereby rotating the valve during one of its strokes.

In testimony whereof I hereunto affix my signature.

MARCUS O. ANTHONY. 

